--- version: rssac002v4 service: a.root-servers.net start-period: '2022-03-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5197605703 dns-udp-queries-received-ipv6: 1383981774 dns-tcp-queries-received-ipv4: 286909645 dns-tcp-queries-received-ipv6: 53397007 dns-udp-responses-sent-ipv4: 5366751719 dns-udp-responses-sent-ipv6: 1405738939 dns-tcp-responses-sent-ipv4: 284251880 dns-tcp-responses-sent-ipv6: 53531308